Synonyms to witlessly
unawares, aback, abruptly, accidentally, bang, by accident, by surprise, dash, guiltlessly, hastily, ignorantly, impetuously, implausibly, improbably, impulsively, inadvertently, innocently, insensibly, like a flash, like a thunderbolt, mistakenly, of a sudden, off base, on short notice, plop, plump, plunk, pop, precipitantly, precipitately, precipitously, sharp, short, slap, smack, startlingly, sudden, suddenly, surprisingly, unanticipatedly, unaware, unconsciously, unexpectedly, unforeseeably, unguiltily, unintentionally, unknowingly, unmindfully, unpredictably, unprepared, unready, unsuspectingly, unwittingly, without notice, without warning